Home / 84,636.10-126,986.55-83,307.70

Finding the Fourth Proportional to 84,636.10, 126,986.55 and 83,307.70

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Solution

The fourth proportional to 84,636.10, 126,986.55 and 83,307.70 is: 124,993.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,636.10 : 126,986.55 = 83,307.70 : x
  2. Step 2: Convert to fraction form
    84,636.10/126,986.55 = 83,307.70/x
  3. Step 3: Cross multiply
    84,636.10x = 126,986.55 × 83,307.70
  4. Step 4: Simplify right side
    84,636.10x = 10,578,957,411.44
  5. Step 5: Solve for x
    x = 10,578,957,411.44/84,636.10
  6. Step 6: Final answer
    x = 124,993.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.